30502272 has 32 divisors (see below), whose sum is σ = 81022680. Its totient is φ = 10167296.

The previous prime is 30502261. The next prime is 30502279. The reversal of 30502272 is 27220503.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30502279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39333 + ... + 40100.

Almost surely, 2^30502272 is an apocalyptic number.

30502272 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30502272 is an abundant number, since it is smaller than the sum of its proper divisors (50520408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30502272 is an equidigital number, since it uses as much as digits as its factorization.

30502272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79450 (or 79438 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 30502272 is about 5522.8862019781. The cubic root of 30502272 is about 312.4477463564.

Adding to 30502272 its reverse (27220503), we get a palindrome (57722775).

The spelling of 30502272 in words is "thirty million, five hundred two thousand, two hundred seventy-two".